# _*_ coding: utf-8 _*_

def add(a,b):
    print "ANDING %d + %d" % (a,b)
    return a + b 
	
def subtract(a,b):
    print "SUBTRACTING %d - %d" % (a,b)
    return a - b
	
def multiply(a,b):
    print "MULTIPLYING %d * %d" % (a,b)
    return a * b
	
def divide(a,b):
    print "DIVIDING %d / %d" % (a,b)
    return a / b
	
print "Let's do some with just functions!"

age = add(30, 5)
height = subtract(78, 4)
weight = multiply(90, 2)
iq = divide(100, 2)

print "Age: %d, Height: %d, Weight: %d, IQ: %d" % (age, height, weight, iq)

# A puzzle for the extra credit, type it in anyway.
print "Here is a puzzle."

what = add(age, subtract(height, multiply(weight, divide(iq, 2))))

print "That becomes:", what, "Can you do it by hand?"